#! /bin/bash

echo -n "please input level(A/B/C/D/E) >: "

read level

echo "level = $level"

case $level in
    "A")
        echo "[90-100]"
        ;;
    "B")
        echo "[80-90]"
        ;;
    "C")
        echo "[70-80]"
        ;;
    "D")
        echo "[60-70]"
        ;;
    "E")
        echo "[0-60]"
        ;;
    "*")
        ;;
esac

